A container measuring 11 cm by 10 cm by 20 cm was filled to the brim with orange juice. Anita drank half of it. How much orange juice was left?
Give your answer in litres. Ans: ___ l

1. Calculate the total volume of the container in cm³

$\text{Total volume} = 11 \times 10 \times 20 = 2200 \text{ cm}^3$

2. Calculate the volume of orange juice left

$\text{Volume left} = \frac{1}{2} \times 2200 = 1100 \text{ cm}^3$

3. Convert the volume from cm³ to litres

$1100 \text{ cm}^3 = \frac{1100}{1000} \text{ l} = 1.1 \text{ l}$